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0001 // vim: set tabstop=4 shiftwidth=4 expandtab: 0002 /* 0003 Gwenview: an image viewer 0004 Copyright 2008 Aurélien Gâteau <agateau@kde.org> 0005 0006 This program is free software; you can redistribute it and/or 0007 modify it under the terms of the GNU General Public License 0008 as published by the Free Software Foundation; either version 2 0009 of the License, or (at your option) any later version. 0010 0011 This program is distributed in the hope that it will be useful, 0012 but WITHOUT ANY WARRANTY; without even the implied warranty of 0013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0014 GNU General Public License for more details. 0015 0016 You should have received a copy of the GNU General Public License 0017 along with this program; if not, write to the Free Software 0018 Foundation, Inc., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA. 0019 0020 */ 0021 #ifndef INVISIBLEBUTTONGROUP_H 0022 #define INVISIBLEBUTTONGROUP_H 0023 0024 #include <lib/gwenviewlib_export.h> 0025 0026 // Qt 0027 #include <QWidget> 0028 0029 // KF 0030 0031 // Local 0032 0033 class QAbstractButton; 0034 0035 namespace Gwenview 0036 { 0037 struct InvisibleButtonGroupPrivate; 0038 /** 0039 * This class makes it possible to create radio buttons without having to put 0040 * them in a dedicated QGroupBox or KButtonGroup. This is useful when you do not 0041 * want to add visual frames to create a set of radio buttons. 0042 * 0043 * It is a QWidget so that it can support KConfigXT: it is completely 0044 * invisible and does not require the radio buttons to be its children. 0045 * The most common way to use it is to create your dialog with Designer, 0046 * including the radio buttons, and to instantiate an instance of 0047 * InvisibleButtonGroup from your code. 0048 * 0049 * Example: 0050 * 0051 * We assume "config" is a KConfigSkeleton object which contains a 0052 * "ViewMode" key. This key is an int where 1 means "list" and 2 means 0053 * "detail". 0054 * We also assume "ui" has been created with Designer and contains two 0055 * QRadioButton named "listRadioButton" and "detailRadioButton". 0056 * 0057 * @code 0058 * // Prepare the config dialog 0059 * KConfigDialog* dialog(parent, "Settings", config); 0060 * 0061 * // Create a widget in the dialog 0062 * QWidget* pageWidget = new QWidget; 0063 * ui->setupUi(pageWidget); 0064 * dialog->addPage(pageWidget, i18n("Page Title")); 0065 * @endcode 0066 * 0067 * Now we can setup an InvisibleButtonGroup to handle both radio 0068 * buttons and ensure they follow the "ViewMode" config key. 0069 * 0070 * @code 0071 * InvisibleButtonGroup* group = new InvisibleButtonGroup(pageWidget); 0072 * group->setObjectName( QLatin1String("kcfg_ViewMode" )); 0073 * group->addButton(ui->listRadioButton, 1); 0074 * group->addButton(ui->detailRadioButton, 2); 0075 * @endcode 0076 */ 0077 class GWENVIEWLIB_EXPORT InvisibleButtonGroup : public QWidget 0078 { 0079 Q_OBJECT 0080 Q_PROPERTY(int current READ selected WRITE setSelected NOTIFY selectionChanged USER true) 0081 public: 0082 explicit InvisibleButtonGroup(QWidget *parent = nullptr); 0083 ~InvisibleButtonGroup() override; 0084 0085 int selected() const; 0086 0087 void addButton(QAbstractButton *button, int id); 0088 0089 public Q_SLOTS: 0090 void setSelected(int id); 0091 0092 Q_SIGNALS: 0093 void selectionChanged(int id); 0094 0095 private: 0096 InvisibleButtonGroupPrivate *const d; 0097 }; 0098 0099 } // namespace 0100 0101 #endif /* INVISIBLEBUTTONGROUP_H */